JP2024019112A - Ophthalmic apparatus and operation unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ophthalmic apparatus and an operation unit capable of easily and properly inputting both a fine movement instruction and a rough movement instruction of an optometry unit.

SOLUTION: A control section executes a fine movement step and a rough movement step. In the fine movement step, in a case where a tilt operation of tilting an operation stick within a predetermined range is detected by an operation detection unit, the control section controls a drive section in response to the detected tilt operation, and thereby finely moves a position of the optometry unit. In the rough movement step, in a case where at least one of a tilt operation of tilting the operation stick over a predetermined range and an operation of a rough movement operation section is detected by the operation detection unit, the control section controls the drive section in response to the detected operation, and thereby roughly moves the position of the optometry unit. The operation detection unit comprises a common detection section which detects both the tilt operation of tilting the operation stick over a predetermined range and the operation of the rough movement operation section.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present disclosure relates to an ophthalmological apparatus for testing an eye to be examined, and an operation unit operated to move the relative position of an optometry unit of the ophthalmological apparatus with respect to the eye to be examined.

Various ophthalmological devices (for example, eye refractive power measurement device, corneal curvature measurement device, intraocular pressure measurement device, fundus camera, OCT device, laser scanning ophthalmoscopy device (SLO), etc.) are known for testing the subject's eye. There is. Testing of the eye to be examined using many ophthalmological apparatuses needs to be performed with the relative position between the eye to be examined and the optometry unit adjusted to an appropriate position.

Ophthalmological apparatuses are also known in which at least a portion of the apparatus can be moved finely and coarsely in order to efficiently adjust the relative position between the eye to be examined and the optometry unit. Fine movement is a small (or slow) movement of at least a portion of the device to finely adjust the relative position. Coarse movement refers to moving at least a portion of the device to a greater extent (or faster) than during fine movement in order to roughly adjust the relative position.

For example, the ophthalmologic apparatus described in Patent Document 1 moves the optometry unit slightly when the operation stick is tilted within a certain tilting range, and also moves the optometry unit when the push button at the top of the operation stick is operated. Move roughly. Further, there is also known an ophthalmologic apparatus that slightly moves the optometry unit when the tilting range of the operation stick is within a predetermined range, and coarsely moves the optometry unit when the tilting range of the operation stick exceeds the predetermined range.

JP2014-23960A

In ophthalmological devices where instructions for coarse movement are input by an operation different from tilting the operation stick, it is possible to input instructions for coarse movement without tilting the operation stick, but it is possible to input coarse movement instructions during fine movement and coarse movement. Since the parts are different, switching between fine and coarse movements tends to be complicated. On the other hand, in an ophthalmological device that coarsely moves the optometry unit when the tilting range of the operation stick exceeds a predetermined range, both fine movement instructions and coarse movement instructions can be input using the operation stick, but it is not possible to input coarse movement instructions. When doing so, it is necessary to tilt the control stick considerably. Therefore, an ophthalmologic apparatus is desired that allows both fine movement instructions and coarse movement instructions to be input more easily and appropriately.

A typical object of the present invention is to provide an ophthalmologic apparatus and an operation unit that can more easily and appropriately input both fine movement instructions and coarse movement instructions of an optometry unit.

An ophthalmologic apparatus provided by a typical embodiment of the present disclosure includes an optometry unit for testing an eye to be examined, a drive unit that moves the relative position of the optometry unit with respect to the eye to be examined, and an ophthalmology apparatus capable of tilting in any direction. A supported operation stick, a coarse movement operation section operated by the examiner to coarsely move the optometry unit, an operation detection unit that detects operations of the operation stick and the coarse movement operation section, and a control section. , the control unit is configured to control the driving unit according to the detected tilting operation when the operation detection unit detects a tilting operation within a predetermined range of the operation stick. A detected operation when at least one of a fine movement step for slightly moving the position of the unit, a tilting operation of the operation stick exceeding the predetermined range, and an operation of the coarse movement operation section is detected by the operation detection unit. a coarse movement step of coarsely moving the position of the optometry unit by controlling the drive unit according to the operation detection unit, and the operation detection unit performs a tilting operation of the operation stick exceeding the predetermined range; A common detection section is provided that detects the operation of the coarse movement operation section.

The operation unit provided by the exemplary embodiment of the present disclosure is operated by the examiner in order to move the relative position of the optometry unit of the ophthalmological apparatus with respect to the eye to be examined, and is tiltable in any direction. an operation stick supported by the optometry unit, a coarse movement operation section operated by the examiner to coarsely move the optometry unit, and an operation detection unit that detects operations of the operation stick and the coarse movement operation section. , when a tilting operation of the operation stick within a predetermined range is detected by the operation detection unit, the position of the optometry unit is slightly moved in accordance with the detected tilting operation, and the operation stick is tilted beyond the predetermined range. When at least one of an operation and an operation of the coarse movement operation section is detected by the operation detection unit, the position of the optometry unit is coarsely moved according to the detected operation, and the operation detection unit A shared detection section is provided that detects both a tilting operation of the operation stick exceeding the predetermined range and an operation of the coarse movement operation section.

According to the ophthalmologic apparatus according to the present disclosure, both instructions for fine movement and instructions for coarse movement of the optometry unit can be input more easily and appropriately.

FIG. 2 is a right side view showing the appearance of the ophthalmologic apparatus 1. FIG. 1 is a diagram showing an optical system and a control system of an ophthalmologic apparatus 1. FIG. FIG. 6 is a perspective view of the operating unit 60 as viewed diagonally from the front right. 4 is a cross-sectional view taken along the line AA in FIG. 3. FIG. 6 is a plan view of the operation unit 60. FIG. FIG. 5 is a diagram showing a state in which a coarse movement operation section 70, a coarse movement operation interlocking section 71, etc. are removed from the operation unit 60 of FIG. 4. FIG. 4 is a diagram illustrating a state in which an operation stick 61, a tilting operation interlocking part 67, etc. are removed from the operation unit 60 of FIG. 3. FIG. It is a flowchart of the relative position adjustment process which the ophthalmologic apparatus 1 performs.

<Summary>
The ophthalmological apparatus exemplified in the present disclosure includes an optometry unit, a drive section, an operation stick, a coarse movement operation section, an operation detection unit, and a control section. The optometry unit is used to examine a subject's eye. The drive unit moves the relative position of the optometry unit with respect to the eye to be examined. The operating rod is supported so as to be tiltable in any direction. The coarse movement operation section is operated by the examiner to coarsely move the optometry unit. The operation detection unit detects operations of the operation stick and the coarse movement operation section. The control unit executes a fine movement step and a coarse movement step. In the fine movement step, when the operation detection unit detects a tilting operation within a predetermined range of the operation stick, the control unit finely moves the position of the optometry unit by controlling the drive unit according to the detected tilting operation. let In the coarse movement step, when the operation detection unit detects at least one of a tilting operation of the operation stick exceeding a predetermined range and an operation of the coarse movement operation section, the control section controls the drive section according to the detected operation. The position of the optometry unit is coarsely moved by controlling the position of the optometry unit. The operation detection unit includes a common detection section that detects both a tilting operation of the operation stick exceeding a predetermined range and an operation of the coarse movement operation section. Note that, as described above, fine movement means moving the optometry unit smaller (or slower) than during coarse movement in order to finely adjust the relative position between the subject's eye and the optometry unit. For example, the control unit may move the optometry unit within a movable range smaller than the movable range during coarse movement, thereby moving the optometry unit smaller than during coarse movement. Note that the moving speed of the optometric unit during fine movement may be different from the moving speed of the optometric unit during coarse movement (for example, it may be smaller than the moving speed during coarse movement), and It may be the same as the moving speed. Coarse movement refers to moving the optometry unit to a greater extent (or faster) than during fine movement in order to roughly adjust the relative position between the subject's eye and the optometry unit. For example, the control unit may move the optometric unit within a movable range that is larger than the movable range during the micro-movement, thereby moving the optometry unit more than during the micro-movement. For example, while an instruction for coarse movement is input by the examiner, the control unit continues to move the optometry unit regardless of the movable range during fine movement, thereby moving the optometry unit to a greater extent than during fine movement. Good too. Note that the moving speed of the optometry unit during coarse movement may be different from the movement speed of the optometry unit during fine movement (for example, may be greater than the movement speed during fine movement), or the movement speed during fine movement may be different from the movement speed of the optometry unit during fine movement. may be the same as

In the ophthalmological apparatus according to the present disclosure, the examiner can input an instruction for coarse movement of the optometry unit by either tilting the operation stick beyond a predetermined range or operating the coarse movement operation section. . In other words, since the examiner can input both fine movement instructions and coarse movement instructions by tilting the operating stick, it is not essential to switch the part to be operated between fine movement and coarse movement. In addition, the examiner can give instructions for fine movements and coarse movements by adjusting only the tilting angle of the operating stick, without having to perform any operations other than tilting the operating stick (for example, sliding the operating stick itself). You can switch instructions. Further, since it is also possible to input a coarse movement instruction using the coarse movement operation section, it is not necessary to greatly tilt the operation stick when inputting a coarse movement instruction. Further, the shared detection section is shared for detecting a tilting operation of the operating stick exceeding a predetermined range and detecting an operation of the coarse movement operating section. As a result, a tilting operation of the operation stick exceeding a predetermined range and an operation of the coarse movement operation section can be appropriately detected with a simple configuration. Therefore, according to the ophthalmologic apparatus of the present disclosure, both instructions for fine movement and instructions for coarse movement of the optometry unit can be input more easily and appropriately.

The technology exemplified in this disclosure is for performing an examination of an eye to be examined (e.g., photographing the eye to be examined, measuring ocular characteristics of the eye to be examined, observing the eye to be examined (including observation for surgery or treatment, etc.)) It can be applied to various ophthalmological devices. For example, examples of ophthalmological devices that take images of the eye to be examined include OCT devices, laser scanning ophthalmoscopy devices (SLO), fundus cameras, goniometric devices, corneal endothelial cell imaging devices (CEM), and the like. Examples of ophthalmological devices that measure ocular characteristics of an eye to be examined include an eye refractive power measuring device, a corneal shape measuring device, an axial length measuring device, and an intraocular pressure measuring device. Further, the technology exemplified in the present disclosure may be adopted in an ophthalmological apparatus such as a photocoagulation device, a YAG laser surgical device, a slit lamp, etc., for performing surgery or treatment on tissues of a subject's eye while observing the subject's eye.

The specific method of the fine movement step can be selected as appropriate. For example, the control unit may slightly move the optometry unit in the same direction as the tilting direction of the operation stick so that the tilt angle of the operation stick is proportional to the moving distance of the optometry unit. The control unit may slightly move the optometry unit in response to the tilting operation of the operation stick so that the tilted position of the operation stick corresponds to the position of the optometry unit.

Further, a specific control method for coarsely moving the optometry unit can also be selected as appropriate. For example, when it is detected that the coarse movement operation section has been operated, the control section may coarsely move the optometry unit in a direction corresponding to the direction in which the coarse movement operation section was operated. Further, when a tilting operation of the operating stick exceeding a predetermined range is detected, the control unit may coarsely move the optometry unit in a direction corresponding to the direction in which the operating stick is tilted.

The control unit controls the speed of coarse movement of the optometry unit when a tilting operation exceeding a predetermined range of the operation stick is detected, and the speed of coarse movement of the optometry unit when an operation of the coarse movement operation section is detected. Different speeds may be used. In this case, the relative position of the optometry unit with respect to the eye to be examined can be adjusted more appropriately. For example, the control unit may set the speed of coarse movement of the optometry unit when a tilting operation exceeding a predetermined range of the operation stick is detected to be higher than the speed of coarse movement of the optometry unit when an operation of the coarse movement operation section is detected. It may also be delayed. In this case, the discomfort that occurs when switching from a state in which the operation stick is operated and the optometry unit is moved slightly to a state in which the operation stick is tilted beyond a predetermined range and the optometry unit is coarsely moved is reduced.

The ophthalmologic apparatus may further include a tilting operation interlocking section and a coarse movement operation interlocking section. The tilting operation interlocking section moves in conjunction with the tilting operation of the operating stick. The coarse movement operation interlocking section moves in conjunction with the operation of the coarse movement operation section. The shared detection section is provided at a position where the movement path of the tilting operation interlocking section overlaps with the movement path of the coarse movement operation interlocking section, thereby preventing tilting operations that exceed a predetermined range of the operation stick and operations of the coarse movement operation section. They may be detected together. In this case, regardless of whether a tilting operation of the operating stick exceeding a predetermined range or an operation of the coarse movement operation section is performed, the coarse movement operation instruction is appropriately detected by the shared detection section.

The ophthalmologic apparatus may further include a shared detection unit moving mechanism. The shared detection part moving mechanism moves the position of the shared detection part on an overlapping path where the movement path of the tilting operation interlocking part and the movement path of the coarse movement operation interlocking part overlap, so that the instruction by operating the operation stick can be finely moved. The predetermined range of tilt that changes depending on the instruction and coarse movement instruction may be changed. In this case, the examiner can set the predetermined range of the operating stick in which fine movement and coarse movement are switched to an appropriate range desired by the examiner by moving the shared detection unit.

Note that the common detection unit moving mechanism may include an actuator (for example, a motor, etc.) that moves the common detection unit on an overlapping path. The control unit may move the shared detection unit by controlling driving of the actuator according to an instruction input by the examiner. Further, the shared detection unit moving mechanism may be a mechanism that moves the shared detection unit by manual operation by the examiner.

However, the method for changing the predetermined range of the operating stick is not limited to the method of moving the shared detection section. For example, the ophthalmologic apparatus may include a tilt angle detection section that detects a tilt angle (amount of tilt) of the operating rod. In this case, the control unit changes the predetermined range of the operating stick by changing the threshold of the tilt angle (tilt amount) for switching between coarse movement and fine movement according to instructions input by the examiner. Good too.

The operating rod may include a grip portion, a ball portion, and an action portion. The grip part is held by the examiner. The spherical portion is located on the proximal side of the substantially rod-shaped operating rod with respect to the grip portion, and is rotatably held by the bearing portion. The action portion is located further toward the proximal end of the substantially rod-shaped operation rod than the ball portion (on the opposite side of the grip portion with the ball portion in between), and is connected to the tilting operation interlocking portion. When the operation stick is tilted, the action section moves in a direction opposite to the direction in which the grip section of the operation stick is tilted. One of the tilting operation interlocking section and the coarse movement operation interlocking section may include a movement direction conversion mechanism. The movement direction conversion mechanism converts the region detected by the common detection section (hereinafter referred to as the "detected region") as the action section of the operation stick or the coarse movement operation section moves. Move in the opposite direction.

In this case, the operating part of the operating stick located closer to the proximal end than the ball part is connected to the tilting operation interlocking part, so it is easy to appropriately accommodate the structure for detecting the tilting operation of the operating stick. Become. Furthermore, even when either the operation stick or the coarse movement operation section is operated in a specific direction, the movement direction of the detected part of one of the tilting operation interlocking section and the coarse movement operation interlocking section is changed by the movement direction conversion mechanism. As a result, the detected parts of both the tilting operation interlocking section and the coarse movement operation interlocking section move in the same direction. As a result, regardless of whether the operation stick or the coarse operation section is operated, the shared detection section appropriately detects the operation. Therefore, coarse movement control of the optometry unit is executed more appropriately.

Note that the specific configuration of the movement direction conversion mechanism can be selected as appropriate. For example, a cam mechanism may be used as the movement direction changing mechanism. In this case, by rotating the cam about the fulcrum, the moving directions of the driving joint on the side of the working shaft of the cam and the driven joint on the side of the detected region may be reversed.

However, it is also possible to detect both a tilting operation of the operation stick exceeding a predetermined range and an operation of the coarse movement operation section without using the movement direction conversion mechanism. For example, if the control unit detects movement of one of the tilting operation interlocking unit and the coarse operation interlocking unit (that is, a tilting operation that exceeds a predetermined range of the operation stick or an operation of the coarse movement operation unit), The tilt angle of the operating stick may also be obtained. The control section may determine that the coarse movement operation section has been operated if the tilt angle of the operation stick is within a predetermined range, and may coarsely move the optometry unit in accordance with the moving direction of the coarse movement operation section. On the other hand, if the tilt angle of the operation stick exceeds a predetermined range, the control unit may determine that an instruction for coarse movement using the operation stick has been input, and coarsely move the optometry unit according to the direction in which the operation stick is tilted. .

The coarse movement operation section may be an annular member disposed surrounding the outer periphery of a substantially rod-shaped operation stick. The coarse movement operation section may be supported so as to be slidable in a two-dimensional direction. In this case, the examiner performs a tilting operation that exceeds the predetermined range of the operation stick by sliding the coarse movement control section around the operation stick in the same direction as the direction in which the operation stick is tilted when moving the optometry unit. Even if the user does not use the camera, instructions for coarse movement of the optometry unit in an appropriate direction can be input. Therefore, the operational feeling when the examiner operates the operating stick and the coarse operation section is improved. Note that the coarse movement operation section may be supported so as to be slidable in a two-dimensional direction independently of the operation stick. In this case, the examiner can easily input instructions for coarse movement of the optometry unit by simply sliding only the coarse movement operation section independently.

However, it is also possible to change the configuration of the coarse movement operation section. For example, the coarse movement operation section may be provided at a position different from the arrangement position of the operation stick. The shape of the coarse movement operation section may be other than annular. Instead of a slidable member, other members such as a trackball or knob may be used as a coarse control.

The operation unit exemplified in the present disclosure includes an operation stick that is supported so as to be tiltable in any direction, a coarse movement operation section that is operated by the examiner to coarsely move the optometry unit, and the operation stick and the coarse movement operation section. an operation detection unit that detects an operation of the controller. When a tilting operation of the operation stick within a predetermined range is detected by the operation detection unit, the position of the optometry unit is slightly moved in accordance with the detected tilting operation. When the operation detection unit detects at least one of a tilting operation of the operation stick exceeding a predetermined range and an operation of the coarse movement operation section, the position of the optometry unit is coarsely moved in accordance with the detected operation. The operation detection unit includes a common detection section that detects both a tilting operation of the operation stick exceeding a predetermined range and an operation of the coarse movement operation section.

According to the operation unit according to the present disclosure, the examiner can input an instruction for coarse movement of the optometry unit even if the examiner performs either a tilting operation exceeding a predetermined range of the operation stick or an operation of the coarse movement operation section. can. In other words, since the examiner can input both fine movement instructions and coarse movement instructions by tilting the operating stick, it is not essential to switch the part to be operated between fine movement and coarse movement. In addition, the examiner can give instructions for fine movements and coarse movements by adjusting only the tilting angle of the operating stick, without having to perform any operations other than tilting the operating stick (for example, sliding the operating stick itself). You can switch instructions. Further, since it is also possible to input a coarse movement instruction using the coarse movement operation section, it is not necessary to greatly tilt the operation stick when inputting a coarse movement instruction. Further, the shared detection section is shared for detecting a tilting operation of the operating stick exceeding a predetermined range and detecting an operation of the coarse movement operating section. As a result, a tilting operation of the operation stick exceeding a predetermined range and an operation of the coarse movement operation section can be appropriately detected with a simple configuration. Therefore, according to the ophthalmologic apparatus of the present disclosure, both instructions for fine movement and instructions for coarse movement of the optometry unit can be input more easily and appropriately.

<Embodiment>
Hereinafter, one typical embodiment according to the present disclosure will be described with reference to the drawings. The ophthalmological apparatus 1 of the present embodiment examines the eye E to be examined in a state where the relative position with respect to the eye E to be examined is adjusted to an appropriate position (for example, with the examination axis aligned with the eye E to be examined). . The ophthalmological apparatus 1 illustrated in this embodiment is an eye refractive power measurement apparatus that measures the eye refractive power of the eye E to be examined. However, the ophthalmological device 1 is a device that performs a test different from the measurement of eye refractive power (for example, an OCT device, a laser scanning ophthalmoscope (SLO), a fundus camera, a goniometer, a corneal endothelial cell imaging device (CEM), etc.). ), a corneal curvature measuring device, an intraocular pressure measuring device, an axial length measuring device, etc.). In the following explanation, the optical axis direction of the light used for inspection is referred to as the Z-axis direction (front-back direction), the horizontal direction perpendicular to the Z-axis direction is referred to as the X-axis direction (left-right direction), and the direction perpendicular to both the Z-axis and the X-axis. is the Y-axis direction (vertical direction).

(Schematic configuration)
A schematic configuration of the ophthalmologic apparatus 1 will be described with reference to FIG. 1. The ophthalmological apparatus 1 of this embodiment includes a housing 3, a base 5, a face support section 9, an optometry unit 2, an operation unit 60, a drive section 4, a control section 50, a display section 8, and the like. The housing 3 includes a base 5 and various components of the ophthalmologic apparatus 1 (for example, the optometry unit 2, the drive unit 4, the control unit 50, etc.). The base 5 of the housing 3 supports the entire ophthalmologic apparatus 1 . The face support section 9 supports the subject's face. The face support section 9 of this embodiment includes a chin rest on which the chin of the subject is placed, and a forehead rest on which the forehead of the subject is placed. In addition, although the face support part 9 of this embodiment is provided in the base 5, the face support part 9 may be provided independently from the base 5.

The optometry unit 2 examines the eye E to be examined. The optometry unit 2 may include a configuration (an optical system in this embodiment) for testing at least one of the eye refractive power, corneal curvature, and intraocular pressure of the eye E to be examined, for example. Further, the optometry unit 2 may include an optical system for photographing the tissue of the eye to be examined. The drive unit 4 moves the relative position between the eye E and the optometric unit 2 by moving the optometric unit 2 in the up, down, left, right, front and rear directions (three-dimensional direction) with respect to the base 5. Note that the drive unit 4 may move the relative position between the eye E and the optometric unit 2 by moving the face support unit 9 together with the optometric unit 2 or instead of the optometric unit 2. The operation unit 60 is arranged on the side of the housing 3 opposite to the side where the subject is located (that is, the side where the examiner is located). The operating unit 60 is operated by the examiner in order to input instructions for moving the optometry unit 2, instructions to start performing the test, and the like. Details of the operation unit 60 will be described later. The control unit 50 manages various controls in the ophthalmologic apparatus 1 (for example, drive control of the drive unit 4, etc.). The display unit 8 displays various images (for example, an observation image of the eye E, measurement results, etc.). In this embodiment, a touch panel is provided on the surface of the display section 8. The touch panel is used as one of the operating units operated by the examiner to input various instructions. Note that the display section 8 may be provided independently of the housing 3.

(Optometry unit/control unit)
Referring to FIG. 2, the optometry unit 2 and the control section 50 will be described. As mentioned above, in this embodiment, the case where the ophthalmologic apparatus 1 is an eye refractive power measuring apparatus is illustrated. Therefore, the optometry unit 2 of this embodiment includes an optical system for measuring the eye refractive power of the eye to be examined. Specifically, the optometry unit 2 of this embodiment includes a measurement optical system 10, a fixation target presentation optical system 30, a target projection optical system 40, and an observation optical system (imaging optical system) 45.

The measurement optical system 10 includes a projection optical system (light projecting optical system) 10A and a light receiving optical system 10B. The projection optical system 10A projects a light beam onto the fundus of the eye E to be examined via the pupil of the eye E to be examined. The light-receiving optical system 10B extracts a ring-shaped reflected light beam from the fundus through the periphery of the pupil, and photographs a ring-shaped fundus reflection image used mainly for measuring refractive power.

The projection optical system 10A includes a measurement light source 11, a relay lens 12, a hall mirror 13, and an objective lens 14 on the optical axis L1. The measurement light source 11 projects a spot-shaped light source image onto the fundus of the eye via the optical members from the relay lens 12 to the objective lens 14 and the center of the pupil of the eye E to be examined. The measurement light source 11 is moved by the moving mechanism 15 in the direction of the optical axis L1. The hall mirror 13 is provided with an aperture that allows the light beam from the measurement light source 11 to pass through the relay lens 12 . The hall mirror 13 is arranged at a position optically conjugate with the pupil of the eye E to be examined.

The light receiving optical system 10B shares the hall mirror 13 and the objective lens 14 with the projection optical system 10A. Further, the light receiving optical system 10B includes a relay lens 16, a total reflection mirror 17, a light receiving aperture 18, a collimator lens 19, a ring lens 20, and a photographing element 22 on the optical axis L2 in the reflection direction of the hall mirror 13. The light receiving aperture 18, the collimator lens 19, the ring lens 20, and the photographing element 22 are moved in the direction of the optical axis L2 by the moving mechanism 15 together with the measurement light source 11 of the projection optical system 10A. When the measurement light source 11 is placed at a position conjugate with the fundus by the moving mechanism 15, the light-receiving diaphragm 18 and the photographing element 22 are also placed at positions optically conjugate with the fundus.

The ring lens 20 is an optical element for shaping the fundus reflected light guided from the objective lens 14 via the collimator lens 19 into a ring shape. The ring lens 20 has a ring-shaped lens portion and a light shielding portion. When the light-receiving diaphragm 18 and the photographing element 22 are arranged at a position optically conjugate with the fundus of the eye, the ring lens 20 is arranged at a position optically conjugate with the pupil of the eye E. The photographing element 22 receives ring-shaped fundus reflected light (hereinafter referred to as "ring image") via the ring lens 20. The photographing element 22 outputs image information of the received ring image to the control unit 50. As a result, the control unit 50 displays the ring image on the display unit 8 and calculates the refractive power based on the ring image.

In this embodiment, a dichroic mirror 29 is arranged between the objective lens 14 and the eye E to be examined. The dichroic mirror 29 transmits the light emitted from the light source 11 and the fundus reflected light according to the light from the light source 11, while receiving the light flux from the fixation target presentation optical system 30 (details will be described later). Lead to optometry. Further, the dichroic mirror 29 reflects the anterior segment reflected light from the target projection optical system 40 (details will be described later) and guides it to the observation optical system 45 .

The target projection optical system 40 is arranged in front of the eye E to be examined. The index projection optical system 40 mainly projects an index used for positioning (alignment) of the optical system with respect to the eye E to be examined onto the anterior segment of the eye E to be examined. In the present embodiment, the index projection optical system 40 projects an index used for positioning the optical system with respect to the eye E to be examined in at least one of the XY direction and the Z direction onto the anterior segment of the eye. Note that the ophthalmologic apparatus 1 can also perform alignment by detecting a characteristic part in the anterior segment image without using the target projection optical system 40.

The target projection optical system 40 of this embodiment includes a ring target projection section 41 and a target projection section 42. The ring index projection unit 41 projects a ring index (so-called Mayer ring) onto the cornea of the eye E by projecting diffused light onto the cornea. In the present embodiment, the ring index projection unit 41 is also used as an anterior segment illumination for illuminating the anterior segment of the eye E to be examined. The index projection unit 42 projects an infinity index onto the cornea of the eye E by projecting parallel light onto the cornea.

The fixation target presentation optical system 30 includes a light source 31, a fixation target 32, a relay lens 33, a reflection mirror 36, and a lens 39 on the optical axis L4. The fixation target 32 is used to make the subject's eye E fixate during objective refractive power measurement. For example, by illuminating the fixation target 32 with the light source 31, light for causing the eye E to fixate is projected onto the eye E to be examined. The light source 31 and the fixation target 32 are integrally moved in the direction of the optical axis L4 by the drive mechanism 38. By moving the light source 31 and the fixation target 32, the presentation position (presentation distance) of the fixation target is changed. As a result, a mist is applied to the eye E to be examined, and the refractive power is measured.

The observation optical system 45 includes a photographing lens 46 and a photographing element 47 on the optical axis L3 in the direction of reflection of the half mirror 48. The photographing element 47 is arranged at a position optically conjugate with the anterior segment of the eye E to be examined. The photographing element 47 photographs the anterior segment of the eye illuminated by the ring index projection section 41. The output from the imaging element 47 is input to the control section 50. As a result, the anterior segment image of the eye E to be examined photographed by the imaging element 47 is displayed on the display unit 8 (see FIG. 2). Further, the photographing element 47 photographs an alignment index image (in this embodiment, a ring index and an infinity index) formed on the cornea of the eye E by the index projection optical system 40. As a result, the control unit 50 can detect the alignment index image based on the photographic result of the photographing element 47. The control unit 50 can determine whether the alignment state is appropriate based on the position where the alignment index image is detected.

The control unit 50 manages various controls of the ophthalmologic apparatus 1 (for example, drive control of the drive unit 4, etc.). The control unit 50 includes a CPU 51, a ROM 52, a RAM 53, and the like. The CPU 51 is a controller that performs control. The ROM 52 stores an ophthalmologic device control program for controlling the ophthalmologic device 1, initial values, and the like. The RAM 53 temporarily stores various information. The control section 50 is connected to the optometry unit 2, the drive section 4, the display section 8, the operation unit 60, and the storage section (for example, nonvolatile memory) 54. The storage unit 54 is a non-transitory storage medium that can retain stored contents even if the power supply is cut off. For example, a hard disk drive, a removable USB memory, or the like can be used as the storage unit 54.

(operation unit)
The operation unit 60 of this embodiment will be explained with reference to FIGS. 3 to 7. The operation unit 60 is operated by the examiner to input an instruction to move the optometry unit 2 of the ophthalmology apparatus 1 (in this embodiment, an instruction to move the optometry unit 2 slightly and an instruction to move it coarsely) to the ophthalmology apparatus 1. . When the operation unit 60 is operated, the control section 50 outputs a signal according to the operation content to the drive section 4, thereby moving the relative position of the optometry unit 2 with respect to the eye E to be examined.

The operation unit 60 is provided in the casing 3 of the ophthalmological apparatus 1 (for details, see the base 5 of the casing 3, FIG. 1). However, in order to facilitate understanding of the configuration, at least a portion of the operation unit 60 is shown in a state where it is removed from the housing 3 in FIGS. 3 to 7. Note that the operation unit 60 may be provided independently of the housing 3 of the ophthalmological apparatus 1. In this case, the operation unit 60 may be connected to the ophthalmologic apparatus 1 by wired communication or wireless communication. FIG. 3 is a perspective view of the operating unit 60 viewed diagonally from the front right. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3. FIG. 5 is a plan view of the operating unit 60. FIG. 6 is a diagram showing a state in which the coarse movement operation section 70, coarse movement operation interlocking section 71, etc. are removed from the operation unit 60 of FIG. 4. FIG. 7 is a diagram showing a state in which the operation stick 61, the tilting operation interlocking part 67, etc. are removed from the operation unit 60 of FIG. 3.

In Figures 3 and 7, the front right side of the page is in the +X direction, the back left side of the page is in the -X direction, the top side of the page is in the +Y direction, the bottom side of the page is in the -Y direction, the right back side of the page is in the +Z direction, and the front left side of the page is - Let it be the Z direction. 4 and 6, the right side is the +X direction, the left side is the −X direction, the upper side is the +Y direction, the lower side is the −Y direction, the back side of the page is the +Z direction, and the front side of the page is the −Z direction. In FIG. 5, the right side is the +X direction, the left side is the -X direction, the front side of the page is the +Y direction, the back side of the page is the -Y direction, the top side is the +Z direction, and the bottom side is the -Z direction.

(Schematic configuration of operation unit)
As shown in FIGS. 3 and 4, the operation unit 60 of this embodiment includes an operation stick (sometimes referred to as a joystick) 61 and a coarse operation section 70. The operation rod 61 of this embodiment extends outward (in this embodiment, upward) from the housing 3 (specifically, the base 5 of the housing 3, see FIG. 1). The operating rod 61 is supported so as to be tiltable in any direction. The coarse movement operation section 70 is operated by the examiner to coarsely move the optometry unit 2. Further, the operation unit 60 includes an operation detection unit that detects operations of the operation stick 61 and the coarse operation section 70. Although details will be described later, the operation detection unit of this embodiment includes a tilt detection section 68 (see FIGS. 3, 4, and 6) and a shared detection section 77 (77XP, 77XM, 77ZP, 77ZM, and FIGS. (see Figure 7).

In the present embodiment, when a tilting operation of the operation stick 61 within a predetermined range is detected, depending on the detected tilting operation (for example, depending on the tilting direction and amount (tilting angle) of the operation stick 61), The position of the optometry unit 2 is slightly moved. When a tilting operation of the operation stick 61 exceeding a predetermined range is detected, the position of the optometry unit 2 is roughly moved in accordance with the detected tilting operation (according to the direction in which the operation stick 61 is tilted). Further, when the operation of the coarse movement operation section 70 is detected, the position of the optometry unit 2 is coarsely moved according to the detected operation (according to the operation direction of the coarse movement operation section 70). In other words, in the ophthalmological apparatus 1 of the present embodiment, even if the examiner performs either a tilting operation of the operation stick 61 exceeding a predetermined range or an operation of the coarse movement operation section 70, the examiner can instruct the coarse movement of the optometry unit 2. can be entered. In other words, since the examiner can input both fine movement instructions and coarse movement instructions by tilting the operation stick 61, it is not essential to switch the part to be operated between fine movement and coarse movement. In addition, the examiner can adjust only the tilting angle of the operating stick 61 without performing any operation other than tilting the operating stick 61 (for example, sliding the operating stick 61 itself), thereby giving instructions for fine movement. Coarse movement instructions can be switched. Further, since it is also possible to input a coarse movement instruction using the coarse movement operation section 70, it is not necessary to greatly tilt the operation stick 61 when inputting a coarse movement instruction. Therefore, both instructions for fine movement and instructions for coarse movement of the optometry unit 2 can be input more easily and appropriately. The configuration of each part will be explained in detail below.

(operation stick)
As shown in FIGS. 3 to 6, the operating rod 61 is a substantially rod-shaped member that is held by the examiner. The operation stick 61 of this embodiment extends upward from the housing 3. The operation stick 61 of this embodiment can be tilted in any direction within a predetermined tilting range. When the tilting angle of the operation stick 61 reaches the limit of the tilting range, the operation stick 61 can no longer be tilted. The predetermined range in which the optometry unit 2 is slightly moved is located on the center side of the tilting range of the operation stick 61. Among the tilting ranges, the area outside the predetermined range in which the optometry unit 2 is slightly moved is an area for inputting coarse movement instructions. The examiner tilts the operating stick 61 within a predetermined range in the direction in which he or she wants to move the optometric unit 2, thereby slightly moving the optometric unit 2 in the direction corresponding to the tilting direction of the operating stick 61 among the XZ directions. Operation instructions can be input. In addition, the examiner can tilt the operating stick 61 beyond a predetermined range in the direction in which he or she wants to move the optometric unit 2, thereby moving the optometric unit 2 in the direction corresponding to the tilting direction of the operating stick 61 among the XZ directions. Operation instructions for coarse movement can be input.

The operation rod 61 includes a grip portion 62 (see FIGS. 3, 4, and 6), a rotary dial 63 (see FIGS. 3, 4, and 6), a measurement button 64 (see FIGS. 3 to 6), and a ball portion 65. (see FIGS. 4 and 6), and an action section 66 (see FIGS. 4 and 6). The grip portion 62 is held by the examiner. The rotary dial 63 is operated by the examiner to input an instruction to the ophthalmological apparatus 1 to move the optometry unit 2 in the vertical direction (Y direction). The rotary dial 63 of this embodiment is provided on the side surface of the grip portion 62 of the operating rod 61 over the circumferential direction. The rotation of the rotary dial 63 is detected by a rotation detecting section (for example, an encoder, etc.). For example, when the rotary dial 63 is rotated clockwise, an operation signal for moving the optometry unit 2 upward (+Y direction) is output, and when the rotary dial 63 is rotated counterclockwise, an operation signal for moving the optometry unit 2 is output. An operation signal for moving the unit downward (in the -Y direction) is output. The measurement button 64 is operated by the examiner in order to input an instruction to start the examination of the eye E by the optometry unit 2. The measurement button 64 of this embodiment is provided at the top of the operation stick 61.

The spherical portion 65 (see FIGS. 4 and 6) is located on the base end side (lower in this embodiment) of the substantially rod-shaped operating rod 61 than the grip portion 62. The ball portion 65 is rotatably held by a bearing portion 69 (see FIG. 4). As a result, the operating rod 61 is tilted in any direction with the ball portion 65 as the center. The action portion 66 (see FIGS. 4 and 6) is located on the proximal side of the substantially rod-shaped operating rod 61 relative to the ball portion 65 (that is, on the opposite side of the grip portion 62 with the ball portion 65 in between). . Therefore, when the operation stick 61 is tilted, the action section 66 moves in a direction opposite to the direction in which the grip section 62 of the operation stick 61 is tilted. The action section 66 is connected to a tilting operation interlocking section 67, which will be described later. With the above configuration, it becomes easy to appropriately accommodate the configuration for detecting the tilting operation of the operation stick 61 inside the housing 3 (see FIG. 1).

The tilting operation interlocking section 67 moves in conjunction with the tilting operation of the operating stick 61. As shown in FIGS. 4 and 6, the tilting operation interlocking section 67 of this embodiment is a substantially plate-shaped member. When the operation stick 61 is tilted, the tilt operation interlocking part 67 connected to the action part 66 of the operation stick 61 slides and moves on the XZ plane.

As shown in FIGS. 3 to 6, a tilt detection section 68 is provided in a part of the tilt operation interlocking section 67. As shown in FIGS. The tilt detection unit 68 of the present embodiment detects the operation direction and operation amount (tilt angle) of the tilt operation of the operation stick 61 by detecting the movement direction and movement amount of the tilt operation interlocking unit 67 on the XY plane. do. In this embodiment, the detection result of the tilting operation of the operation stick 61 by the tilting detection section 68 is used when slightly moving the optometry unit 2. Note that it is also possible to change the configuration for detecting the tilting operation of the operation stick 61. For example, the tilt detection section may be connected to the action section 66 of the operation stick 61. In this case, the tilting detection section may detect the tilting operation of the operation stick 61 by detecting the moving direction and amount of movement of the action section 66 on the XY plane.

As shown in FIG. 5, the tilting operation interlocking section 67 is provided with an X tilting detected section 67X and a Z tilting detected section 67Z. The X tilting detected portion 67X extends from the tilting operation interlocking portion 67 in the Z direction (−Z direction in this embodiment). On the moving path of the X-tilted detected section 67X in the X direction, a +X common detection section 77XP and a -X common detection section 77XM are arranged so as to sandwich the X-tilted detected section 67X. The +X common detection section 77XP is arranged on the -X side from the tip of the X tilted detected section 67X, and the -X common detection section 77XM is arranged on the +X side from the tip of the X tilted detected section 67X. There is. When the operation stick 61 is tilted beyond a predetermined range in the +X direction, the X tilt detection section 67X of the tilt operation interlocking section 67 moves in the -X direction and contacts the +X common detection section 77XP. As a result, the +X common detection unit 77XP detects that a tilting operation for coarsely moving the optometry unit 2 in the +X direction has been performed. Further, when the operation stick 61 is tilted beyond a predetermined range in the -X direction, the X tilt detection section 67X of the tilt operation interlocking section 67 moves in the +X direction and contacts the -X common detection section 77XM. As a result, the -X common detection section 77XM detects that a tilting operation for coarsely moving the optometry unit 2 in the -X direction has been performed.

The Z tilting detected portion 67Z extends from the tilting operation interlocking portion 67 in the X direction (+X direction in this embodiment). On the movement path of the Z-tilted detected section 67Z in the Z direction, a +Z common detection section 77ZP and a -Z common detection section 77ZM are arranged so as to sandwich the Z-tilted detected section 67Z. The +Z common detection section 77ZP is arranged on the -Z side from the tip of the Z tilted detected section 67Z, and the -Z common detection section 77ZM is arranged on the +Z side from the tip of the Z tilted detected section 67Z. There is. When the operating stick 61 is tilted beyond a predetermined range in the +Z direction, the Z tilt detection section 67Z of the tilt operation interlocking section 67 moves in the -Z direction and contacts the +Z common detection section 77ZP. As a result, the +Z common detection unit 77ZP detects that a tilting operation for coarsely moving the optometry unit 2 in the +Z direction has been performed. Further, when the operation stick 61 is tilted beyond a predetermined range in the -Z direction, the Z tilt detection section 67Z of the tilt operation interlocking section 67 moves in the +Z direction and contacts the -Z common detection section 77ZM. As a result, the -Z common detection section 77ZM detects that a tilting operation for coarsely moving the optometry unit 2 in the -Z direction has been performed.

(coarse operation section)
As shown in FIGS. 3 and 4, the coarse movement operation section 70 of the present embodiment is an annular member (approximately annular in this embodiment) disposed surrounding the outer periphery of an approximately rod-shaped operation rod 61. . The coarse movement operation section 70 is supported so as to be slidable in two-dimensional directions on the XZ plane. Therefore, the examiner can move the operation rod 61 beyond the predetermined range by sliding the coarse movement operation section 70 in the same direction as the tilting direction of the operation rod 61 when moving the optometry unit 2, centering on the operation rod 61. An instruction to slightly move the optometry unit 2 in an appropriate direction can be input without performing a tilting operation. Therefore, the operational feeling when the examiner operates the operation stick 61 and the coarse movement operation section 70 is improved.

As shown in FIGS. 4 and 7, a coarse operation interlocking section 71 is connected to the coarse operation section 70. As shown in FIGS. The coarse movement operation interlocking section 71 moves in conjunction with the operation of the coarse movement operation section 70 (in this embodiment, a sliding operation on the XZ plane). The coarse movement operation interlocking section 71 of this embodiment is a substantially plate-shaped member. When the coarse movement operation unit 70 is slid on the XZ plane, the coarse movement operation interlocking unit 71 is also slid and moved on the XZ plane.

As shown in FIG. 7, the coarse movement operation interlocking part 71 is provided with a coarse movement operation X effecting part 71X and a coarse movement operation Z effecting part 71Z. The coarse movement operation X acting part 71X extends from the coarse movement operation interlocking part 71 in the Z direction (-Z direction in this embodiment). An X detected section (not shown) is connected to the coarse movement operation X acting section 71X via an X movement direction conversion mechanism 72X. The movement of the X detected part is detected by the +X common detection section 77XP and the -X common detection section 77XM described above. The X movement direction conversion mechanism 72X moves the X detected part in a direction opposite to the movement direction of the coarse movement operation part 70 along the X axis as the coarse movement operation part 70 moves. Specifically, the X movement direction conversion mechanism 72X of the present embodiment rotates the cam 73X, which extends downwardly from the coarse movement operation The moving directions along the X axis of the driving joint on the action axis side (above the fulcrum part 74X) and the driven joint on the X detected part side (below the fulcrum part 74X) are reversed.

When the coarse movement operation section 70 is moved in the +X direction, the X detected section of the coarse movement operation interlocking section 71 moves in the -X direction and comes into contact with the +X common detection section 77XP. As a result, the +X common detection section 77XP detects that the coarse movement operation section 70 has been operated to coarsely move the optometry unit 2 in the +X direction. Further, when the coarse movement operation section 70 is moved in the -X direction, the X detected section of the coarse movement operation interlocking section 71 moves in the +X direction and comes into contact with the -X common detection section 77XM. As a result, the -X common detection section 77XM detects that the coarse movement operation section 70 has been operated to coarsely move the optometry unit 2 in the -X direction.

As shown in FIG. 7, the coarse movement operation Z action section 71Z extends from the coarse movement operation interlocking section 71 in the X direction (+X direction in this embodiment). A Z detected portion 75Z (see FIG. 4) is connected to the coarse movement operation Z acting portion 71Z via a Z movement direction conversion mechanism 72Z. Movement of the Z detected portion 75Z is detected by the +Z common detection section 77ZP and the -Z common detection section 77ZM described above. The Z movement direction conversion mechanism 72Z moves the Z detected part 75Z in a direction opposite to the movement direction of the coarse movement operation part 70 along the Z axis as the coarse movement operation part 70 moves. In detail, the Z movement direction conversion mechanism 72Z of the present embodiment rotates the cam 73Z, which extends downwardly from the coarse movement operation Z acting part 71 in a swingable state, about the fulcrum part 74Z, thereby changing the direction of the cam. The moving directions along the Z axis of the driving joint on the action axis side (above the fulcrum part 74Z) and the driven joint on the Z detected part 75Z side (below the fulcrum part 74Z) are reversed.

When the coarse movement operation section 70 is moved in the +Z direction, the Z detected section 75X of the coarse movement operation interlocking section 71 moves in the -Z direction and comes into contact with the +Z common detection section 77ZP. As a result, the +Z common detection section 77ZP detects that the coarse movement operation section 70 has been operated to coarsely move the optometry unit 2 in the +Z direction. Further, when the coarse movement operation section 70 is moved in the -Z direction, the Z detected section 75Z of the coarse movement operation interlocking section 71 moves in the +Z direction and comes into contact with the -Z common detection section 77ZM. As a result, the -Z common detection section 77ZM detects that the coarse movement operation section 70 has been operated to coarsely move the optometry unit 2 in the -Z direction.

As described above, the +X common detection section 77XP and the -X common detection section 77XM prevent the tilting operation of the operation stick 61 in the X-axis direction beyond a predetermined range and the operation of the coarse movement operation section 70 in the X-axis direction. Detect together. Further, the +Z common detection section 77ZP and the -Z common detection section 77ZM detect both a tilting operation of the operation stick 61 in the Z-axis direction exceeding a predetermined range and an operation of the coarse movement operation section 70 in the Z-axis direction. . Therefore, a tilting operation of the operation stick 61 exceeding a predetermined range and an operation of the coarse movement operation section 70 can be appropriately detected with a simple configuration.

Note that the operation unit 60 of this embodiment further includes an X common detection section moving mechanism and a Z common detection section movement mechanism. The X shared detection unit moving mechanism moves the +X shared detection unit 77XP on an overlapping path where the movement path of the And the position of the -X common detection section 77XM is moved in the X-axis direction. The Z common detecting section moving mechanism moves the +Z common detecting section 77ZP and -Z on an overlapping path where the moving path of the Z tilting detected section 67Z and the moving path of the Z detected section 75Z of the coarse movement operation interlocking section 71 overlap. The position of the shared detection unit 77ZM is moved in the X-axis direction. As a result, the predetermined range of tilting in which the instruction by operating the operation stick 61 is switched between a fine movement instruction and a coarse movement instruction is changed. Therefore, by moving the shared detection unit 77, the examiner can detect the predetermined range of the operation stick 61 where fine movement and coarse movement are switched, and the range necessary for the operation of the coarse movement operation unit 70 to be detected by the shared detection unit 77. The amount of operation (amount of movement) can be set as appropriate.

Note that the X shared detection unit moving mechanism and the Z shared detection unit movement mechanism may include an actuator (for example, a motor, etc.) that moves the shared detection unit 77 on an overlapping path. The control unit 50 may move the shared detection unit 77 by controlling driving of an actuator according to an instruction input by the examiner. Further, the X shared detection unit moving mechanism and the Z shared detection unit movement mechanism may be mechanisms for moving the shared detection unit 77 by manual operation by the examiner.

(Relative position adjustment process)
With reference to FIG. 8, the relative position adjustment process executed by the ophthalmologic apparatus 1 of this embodiment will be described. In the relative position adjustment process, the relative position between the eye E and the optometry unit 2 is adjusted by controlling the driving of the drive unit 4 according to the operation instruction input by the examiner and moving the position of the optometry unit 2. be adjusted. When the power is turned on, the control unit 50 (CPU 51) of the ophthalmologic apparatus 1 executes the relative position adjustment process illustrated in FIG. 8 in accordance with the ophthalmologic apparatus control program stored in the storage device (for example, ROM 52, etc.).

First, the control unit 50 determines whether or not an operation of the rotary dial 63 is detected (S1). If the operation of the rotary dial 63 is not detected (S1: NO), the control unit 50 determines whether or not a tilting operation of the operating stick 61 within a predetermined range has been detected by the tilting detection unit 68 (S4). If the tilting operation of the operation stick 61 within the predetermined range is not detected (S4: NO), the control unit 50 determines whether the shared detection unit 77 has detected the operation of the operation stick 61 or the coarse operation unit 70. (S7). If the shared detection unit 77 has not detected it (S7: NO), the process returns to S1, and the processes from S1 to S7 are repeated.

When the operation of the rotary dial 63 is detected (S1: YES), the control unit 50 drives the drive unit 4 according to the detected operation direction (rotation direction) and operation amount (rotation amount) of the rotary dial 63. By controlling, the vertical position (Y direction) of the optometry unit 2 is moved in the direction corresponding to the operation direction by a distance corresponding to the operation amount (S2). After that, the process moves to S4. The ophthalmological apparatus 1 moves the face support part 9 up and down in accordance with the operation of the rotary dial 63 together with the optometry unit 2 or separately from the optometry unit 2, so that the eye E and the optometry unit 2 can be adjusted. The relative position between them may be adjusted.

When the tilting detection unit 68 detects a tilting operation of the operating stick 61 within a predetermined range (S4: YES), the control unit 50 controls the driving unit 4 according to the detected tilting direction and amount of the operating stick 61. By controlling the drive, the position of the optometry unit 2 in the front, rear, left, and right directions (XZ directions) is slightly moved in the direction corresponding to the tilting direction by a distance corresponding to the tilting amount (S5). After that, the process moves to S7. As described above, fine movement means moving the optometry unit 2 smaller (or more slowly) than during coarse movement in order to finely adjust the relative position between the eye E and the optometry unit 2. In the present embodiment, the control unit 50 controls the optometry unit 2 within a movable range that is smaller than the movable range during coarse movement (in the present embodiment, within a movable range corresponding to the tiltable range of the operation stick 61). By moving, the optometry unit 2 is moved smaller than during coarse movement. Note that the specific method of fine movement control in S5 can be changed as appropriate. For example, the control unit 50 may slightly move the optometry unit 2 in a direction corresponding to the tilting direction of the operation stick 61 so that the tilt angle (tilt amount) of the operation stick 61 is proportional to the moving distance of the optometry unit 2. . The control unit 50 may slightly move the optometry unit 2 in response to the tilting operation of the operation stick 61 so that the tilted position of the operation stick 61 corresponds to the position of the optometry unit 2. Furthermore, in the present embodiment, the moving speed (for example, maximum moving speed) of the optometry unit 2 during fine movement is smaller than the moving speed during coarse movement. However, the moving speed (maximum moving speed) of the optometry unit 2 during fine movement may be the same as the moving speed during coarse movement.

When the shared detection unit 77 detects the operation of the operation stick 61 or coarse movement operation unit 70 (S7: YES), the control unit 50 detects the operation direction and operation of the operation stick 61 or coarse movement operation unit 70 detected. By controlling the drive of the drive unit 4 according to the amount (for example, the operation time of the switch), the position of the optometry unit 2 in the front, rear, left, and right directions (XZ directions) is coarsely moved in the direction corresponding to the operation direction (S8 ). After that, the process returns to S1. As described above, coarse movement means moving the optometry unit 2 more (or faster) than during fine movement in order to roughly adjust the relative position between the eye E and the optometry unit 2. In this embodiment, the control unit 50 moves the optometry unit 2 within a movable range that is larger than the movable range at the time of slight movement (in this embodiment, the movable range corresponding to the tiltable range of the operation stick 61). By doing so, the optometry unit 2 is moved more than during slight movement. In other words, the control unit 50 of the present embodiment causes the optometry unit 2 to continue to move slightly, regardless of the movable range during fine movements, while the examiner is inputting an instruction to make coarse movements. It is possible to move it further than usual.

The techniques disclosed in the above embodiments are merely examples. Therefore, it is also possible to modify the techniques exemplified in the above embodiments. For example, in the ophthalmological apparatus 1 of the above embodiment, the movement direction conversion mechanisms 72X and 72Z are provided in the coarse movement operation interlocking section 71, so that the detected parts of both the tilting operation interlocking section 67 and the coarse movement operation interlocking section 71 are move in the same direction. As a result, no matter which of the operation stick 61 and the coarse operation section 70 is operated, the shared detection section 77 appropriately detects the operation. However, the movement direction conversion mechanism may be provided in the tilting operation interlocking section 67 instead of the coarse movement operation interlocking section 71.

Note that the process of slightly moving the position of the optometry unit 2 in S4 and S5 in FIG. 8 is an example of a "fine movement step." The process of roughly moving the position of the optometry unit 2 in S7 and S8 of FIG. 8 is an example of a "coarse movement step."

1 Ophthalmological apparatus 2 Optometric unit 3 Housing 4 Drive section 50 Control section 51 CPU
60 Operation unit 61 Operation rod 62 Grip section 65 Ball section 66 Acting section 67 Tilt operation interlocking section 67X Detection section 77XP +X common detection section 77XM -X common detection section 77ZP +Z common detection section 77ZM -Z common detection section

Claims (5)

an optometry unit for testing the eye to be examined;
a drive unit that moves the relative position of the optometry unit with respect to the eye to be examined;
an operation stick that is supported so as to be tiltable in any direction;
a coarse movement operation section operated by an examiner to coarsely move the optometry unit;
an operation detection unit that detects operations of the operation stick and the coarse operation section;
a control unit;
Equipped with
The control unit includes:
a fine movement step of slightly moving the position of the optometry unit by controlling the drive unit in accordance with the detected tilting operation when the operation detection unit detects a tilting operation of the operation stick within a predetermined range; ,
When at least one of a tilting operation of the operation stick exceeding the predetermined range and an operation of the coarse movement operation section is detected by the operation detection unit, controlling the drive section according to the detected operation. a coarse movement step of coarsely moving the position of the optometry unit;
Run
The ophthalmological apparatus is characterized in that the operation detection unit includes a common detection section that detects both a tilting operation of the operation stick exceeding the predetermined range and an operation of the coarse movement operation section. The ophthalmological device according to claim 1,
a tilting operation interlocking part that moves in conjunction with the tilting operation of the operation stick;
a coarse movement operation interlocking part that moves in conjunction with the operation of the coarse movement operation part;
Furthermore,
The shared detection unit is provided at a position where the movement path of the tilting operation interlocking unit and the movement path of the coarse movement operation interlocking unit overlap, so that the shared detection unit detects a tilting operation exceeding the predetermined range of the operation stick and the coarse movement operation interlocking unit. An ophthalmological apparatus characterized in that an operation of a moving operation unit is detected at the same time. The ophthalmological device according to claim 2,
The operation stick is
a gripping part to be gripped by an examiner;
a spherical part located on the proximal side of the gripping part and held by a bearing part;
an action part located on the proximal side of the ball part and connected to the tilting operation interlocking part;
The operating portion moves in a direction opposite to the direction in which the gripping portion of the operation stick is tilted;
One of the tilting operation interlocking section and the coarse movement operation interlocking section is configured to move in a direction opposite to the moving direction of the acting section or the coarse movement operation section as the acting section of the operation stick or the coarse movement operation section moves. An ophthalmologic apparatus characterized by comprising a movement direction changing mechanism that moves a region detected by a common detection section in the direction of . The ophthalmological device according to claim 1,
The ophthalmologic apparatus is characterized in that the coarse movement operation section is an annular member disposed surrounding the outer periphery of the operation rod having a substantially rod shape, and is supported so as to be slidable in a two-dimensional direction. An operation unit operated by an examiner to move the relative position of the optometry unit of the ophthalmological apparatus with respect to the eye to be examined,
an operation stick that is supported so as to be tiltable in any direction;
a coarse movement operation section operated by an examiner to coarsely move the optometry unit;
an operation detection unit that detects operations of the operation stick and the coarse operation section;
Equipped with
When a tilting operation of the operation stick within a predetermined range is detected by the operation detection unit, the position of the optometry unit is slightly moved in accordance with the detected tilting operation,
When the operation detection unit detects at least one of a tilting operation of the operation stick exceeding the predetermined range and an operation of the coarse operation section, the position of the optometry unit is roughly adjusted according to the detected operation. moved,
The operation detection unit is characterized in that the operation detection unit includes a common detection section that detects both a tilting operation of the operation stick exceeding the predetermined range and an operation of the coarse movement operation section.

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